Full-duplex (FD) two-way relaying has the potential to substantially improve the spectral efficiency of the system, and is regarded as an enabling technology for the next generation wireless communication systems. Nevertheless, the joint effect of residual interference and channel fading condition on the fundamental performance of FD two-way relaying systems remains unclear. Motivated by this, this study considers a general FD two-way amplify-and-forward (AF) relaying system with imperfect interference cancellation in the versatile Nakagami-m fading channels, and presents a detailed analytical investigation on the outage performance of the system. The findings of the paper suggest that the performance of the FD two-way AF relaying system depends heavily on the residual interference strength, fading condition parameter m, and signal-to-noise ratio (SNR). The FD scheme outperforms the half-duplex (HD) two-way relaying counterpart in the low and moderate SNR regime, while becomes inferior in the high SNR regime, owing to strong residual interference. Also, compared to the channel fading condition of the information transmission channels, the impact of the channel fading condition of the interference channel on the system performance is relatively insignificant. Moreover, it is desirable to deploy the FD scheme when the channel fading condition of the information transmission channels is good, since it can effectively alleviate the detrimental effect of residual interference.

全双工（FD）双向中继具有大幅提高系统频谱效率的潜力，被视为下一代无线通信系统的使能技术。然而，残余干扰和信道衰落条件对FD双向中继系统基本性能的共同影响仍不清楚。受此启发，本研究考虑了在通用 Nakagami-m 衰落信道中具有不完美干扰消除的通用 FD 双向放大转发 (AF) 中继系统，并对该系统的中断性能进行了详细的分析研究。该论文的研究结果表明，FD 双向 AF 中继系统的性能在很大程度上取决于残余干扰强度、衰落条件参数m和信噪比 (SNR)。FD 方案在低和中等 SNR 方案中优于半双工 (HD) 双向中继对应方案，而在高 SNR 方案中由于强残余干扰而变得较差。而且，与信息传输信道的信道衰落情况相比，干扰信道的信道衰落情况对系统性能的影响相对较小。此外，当信息传输信道的信道衰落情况良好时，最好采用FD方案，因为它可以有效地减轻残余干扰的不利影响。